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upfst_us_178.exe

TUTO4PC COM INTERNATIONAL SL

This is part of the Eorezo downloader which may bundle additional offers on the PC, mostly adware and other potentially unwanted software. The application upfst_us_178.exe by TUTO4PC COM INTERNATIONAL SL has been detected as adware by 6 anti-malware scanners.
Publisher:
TUTO4PC COM INTERNATIONAL SL  (signed and verified)

MD5:
6731e87a57c81693399eb8261a72fc85

SHA-1:
6fe4d94a441f6a9071975a35ef43e262f9fab7f5

SHA-256:
d095b6937cbd3f4484ebc9d16587c3638ca38a608a17356d47e9e2f32ddb89fb

Scanner detections:
6 / 68

Status:
Adware

Analysis date:
4/16/2026 10:04:15 PM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Trojan.Win32.EoRezo
4.0.3.14824

ESET NOD32
Win32/Adware.EoRezo.AJ application
7.0.302.0

IKARUS anti.virus
PUA.EoRezo
t3scan.1.7.5.0

Reason Heuristics
PUP.TUTO4PCCOMINTERNATIONALSL.M
14.8.24.3

Sophos
TUTO4PC
4.98

VIPRE Antivirus
Threat.4895339
32210

File size:
3.2 MB (3,320,288 bytes)

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\fst_us_178\upfst_us_178.exe

Digital Signature
Signed by:
TUTO4PC COM INTERNATIONAL SL

Authority:
GlobalSign nv-sa

Valid from:
6/3/2014 1:55:26 AM

Valid to:
7/28/2015 5:19:10 AM

Subject:
E=contact@tutoriales100.com, CN=TUTO4PC COM INTERNATIONAL SL, O=TUTO4PC COM INTERNATIONAL SL, L=BARCELONA, C=ES

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
1121C8382D4ADA7C0F9495915A4D5B4D8C97

File PE Metadata
Compilation timestamp:
7/23/2014 2:22:41 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
98304:YTvic5XWbRvvBaGNfsA/CphxYfNQzrIXPMMkHj6XIPlehkQFAbR:YTv2R0YOrIfM1q2lehkQFA

Entry address:
0x1F4513

Entry point:
E8, AF, BA, 00, 00, E9, 89, FE, FF, FF, 3B, 0D, 30, B3, 6E, 00, 75, 02, F3, C3, E9, 36, BB, 00, 00, 8B, C1, 83, 60, 04, 00, C7, 00, 20, 46, 69, 00, C6, 40, 08, 00, C3, 8B, FF, 55, 8B, EC, 8B, C1, 8B, 4D, 08, C7, 00, 20, 46, 69, 00, 8B, 09, 89, 48, 04, C6, 40, 08, 00, 5D, C2, 08, 00, 8B, 41, 04, 85, C0, 75, 05, B8, 28, 46, 69, 00, C3, 8B, FF, 55, 8B, EC, 83, 7D, 08, 00, 57, 8B, F9, 74, 2D, 56, FF, 75, 08, E8, B2, 33, 00, 00, 8D, 70, 01, 56, E8, 32, 0F, 00, 00, 59, 59, 89, 47, 04, 85, C0, 74, 11, FF, 75, 08...
 
[+]

Entropy:
6.5925

Code size:
2.3 MB (2,418,688 bytes)

Startup File (All Users Run Once)
Registry location:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce

Name:
upfst_us_178.exe

Command:
C:\users\{user}\appdata\local\fst_us_178\upfst_us_178.exe -runonce


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